In this book, you will find a number of styles of text that distinguish between different kinds of information. Here are some examples of these styles, and an explanation of their meaning.
Code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles are shown as follows: "Once we have an R object, we can easily assess its mode by using
A block of code is set as follows:
num.obj <- seq(from=1,to=10,by=2) logical.obj<-c(TRUE,TRUE,FALSE,TRUE,FALSE) character.obj <- c("a","b","c") is.numeric(num.obj)  TRUE is.logical(num.obj)  FALSE is.character(num.obj)  FALSE
When we wish to draw your attention to a particular part of a code block, the relevant ...